Answer: Option D. Lipids 
Explanation:
Lipids store its energy in forms of triglycerides in the cells of animals. lipids can provide energy at a steady pace whereas carbohydrates releases all its energy at once. 
Some lipids such as steroid act as hormones which serve as chemical messengers between cells. Steroids are chemical messengers for the body. All steroids are derived from cholesterol, 
Cell membranes are made of phospholipids, this type of lipid and this lipd has a polar end because of the phosphate group.
 
        
             
        
        
        
The cells that make up muscle tissue are highly specialized
for the process of producing the process or way of contracting or contraction
in which this is vital with the muscles in order to produce contraction when
having to move or flex specific types or parts of the body.
 
        
             
        
        
        
Answer: Sort of looks like an orchid. Hard to tell, i want to say orchid or hibiscus flower. Good Luck i hope its right!
Explanation: